VisiblePosition RenderSVGInlineText::positionForCoordinates(int x, int y)
{
SVGInlineTextBox* textBox = static_cast<SVGInlineTextBox*>(firstTextBox());
if (!textBox || textLength() == 0)
return VisiblePosition(element(), 0, DOWNSTREAM);
SVGRootInlineBox* rootBox = textBox->svgRootInlineBox();
RenderObject* object = rootBox ? rootBox->object() : 0;
if (!object)
return VisiblePosition(element(), 0, DOWNSTREAM);
int offset = 0;
for (SVGInlineTextBox* box = textBox; box; box = static_cast<SVGInlineTextBox*>(box->nextTextBox())) {
if (box->svgCharacterHitsPosition(x + object->xPos(), y + object->yPos(), offset)) {
// If we're not at the end/start of the box, stop looking for other selected boxes.
if (box->direction() == LTR) {
if (offset <= (int) box->end() + 1)
break;
} else {
if (offset > (int) box->start())
break;
}
}
}
return VisiblePosition(element(), offset, DOWNSTREAM);
}
VisiblePosition RenderSVGInlineText::positionForPoint(const IntPoint& point)
{
SVGInlineTextBox* textBox = static_cast<SVGInlineTextBox*>(firstTextBox());
if (!textBox || textLength() == 0)
return createVisiblePosition(0, DOWNSTREAM);
SVGRootInlineBox* rootBox = textBox->svgRootInlineBox();
RenderBlock* object = rootBox ? rootBox->block() : 0;
if (!object)
return createVisiblePosition(0, DOWNSTREAM);
int closestOffsetInBox = 0;
// FIXME: This approach is wrong. The correct code would first find the
// closest SVGInlineTextBox to the point, and *then* ask only that inline box
// what the closest text offset to that point is. This code instead walks
// through all boxes in order, so when you click "near" a box, you'll actually
// end up returning the nearest offset in the last box, even if the
// nearest offset to your click is contained in another box.
for (SVGInlineTextBox* box = textBox; box; box = static_cast<SVGInlineTextBox*>(box->nextTextBox())) {
if (box->svgCharacterHitsPosition(point.x() + object->x(), point.y() + object->y(), closestOffsetInBox)) {
// If we're not at the end/start of the box, stop looking for other selected boxes.
if (box->direction() == LTR) {
if (closestOffsetInBox <= (int) box->end() + 1)
break;
} else {
if (closestOffsetInBox > (int) box->start())
break;
}
}
}
return createVisiblePosition(closestOffsetInBox, DOWNSTREAM);
}
